Part Number: 134177-01 (Pre amplifier)Part Number: 1803106-02 (Pre amplifier)Part Number: 200738-156 (Pre amplifier)Part Number: 5835010394656 (Pre amplifier)Part Number: 88379-0286-1 (Pre amplifier)Part Number: 97049 (Pre amplifier)Part Number: MW1334A (Pre amplifier)Part Number: MW-19300FIL-100 (Pre amplifier)